Constructional material and method of making same



Patented July 1, 1930 UNITED STATES PATENT OFFICE ALBERT G. FISCHER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE PHILIP CARE-Y MANU- FAG TUBING COMPANY, A CORPORATION OF OHIO I I CONSTRUCTIONAL MATERIAL AND METHOD OF MAKING SAME No Drawing.

In the art it has been the practice to use ordinary asphaltic or bituminous materials 1n the preparation of expansion joints, and in many of these cases, finely divided, saturated,

a normally non-brittle, plastic and elastic material.

Briefly, this invention relates to a treatment of the bituminous material with a glutinous agent or mixture, in order to add to the life 0 the asphalt'or bituminous material and'at the same time make the material more elastic.

This glutinous agent or mixture may be prepared by mixing ordinary flour gluten with water, adding glycerine and heating to between 200 and 300 degrees F., creating a viscous, sticky mass. The amount of water required for this purpose will depend on the physical condition of the gluten. Anyone practising the invention and knowing it is desirable to reduce the gluten to a jelly-like, colloidal form will know when to stop adding water. Suflicient glycerine will be added to,

prevent the watered gluten from hardening.

With the water and glycerine added to the,

gluten it is subjected to a temperature between 200 and 300 degrees F., so as to amalgamate the glycerine with the gluten. During this heat treatment much of the water will be evaporated, but it will not afiect the resultant mixture. Should it be found that too much of the water is lost more will be used, in the first place to compensate for any loss of moisture during the' heating operation. After a thorough amalgamation has been accomplished with the gluten and glycerine it may be mixed with the asphalt. This step may be conveniently accomplished byutilizing mechanical mixing apparatus in whichthe melted asphalt is poured, and with thefmixer equipped with a steam jacket, or other heat-v ing means, so as to keep the materials heated Application filed December 21, 19 25. I Serial No. 76,905.

during mixing. The gluten glycerinepom pound is added to the mechanical mixer and thoroughly mixed with theasphalt. 'Propor tions may be varying proportions, ranging from five (5) per cent upward of the glutinous solution and ninety-five (95) per cent downward of the asphaltic material,

Another effect upon this bituminous material would be to control its penetrating power,

reducing it to a minimum, thus making it easy to incorporate cellular, fibrous material, suc as, cocoanut fibre, sissal, flat fibrousvegetable matter, bristles, flax, bagasse, straw, or any other material suitable as a binder, which is to be incorporated and mixed in a manner so that the bituminousmaterial will not pene tr'ate the fibre.

This combination of materials may be effected by the glutinous mixture described, employing varying roportions of the glutinous material, one ormula being about five (5) per cent lutinous material andv about ninety-five (95 per cent of suitable bituminous material, or varying proportions, increasing the proportion of glutinous material and decreasing the proportion of bituminous material, depending upon the consistency of the mass desired. Where it is desirable to incorporate any. ofthe fibrous material mentioned, ercentages varying from three to twentyve per cent maybe readily incorporated with mechanical mixers, known to. the art.

I- do-not wish to be limited to thefibrous matter mentioned, as many other types of. fibrous matter may be suitable. Also finely divided matter may be employed, if it is desirable that the entire mass be waterproofed. The resulting product is one of an elastic nature and one which will prolong the life of the asphalt or'bituminous material, and at the same time strengthen the binding material resulting from the mixture.

, After mixing this material, as outlined, in any suitable mechanical mixer, it may be presented to pressing rolls, also previously known to the art, suitable for reducing the batch to flat sheets, then cuttin said sheets into strips, adapting the materia for use as premoulded expansion joints. 4

I claim:

1. An expansion joint of the class described, comprising a ductile bituminous material having a small quantity of adhesive agent incorporated therewith, said agent having-the properties of prolonging the stickiness of the bituminous material and adding elasticity thereto.

2.. An expansion joint of the class described, comprising a ductile bituminous material combined with asmall quantity of glutinous mixture and having a fibrous ma terial incorporated therewith.

3. An expansion joint of the class described, comprising a ductile bituminous material combined with a subordinate proportion of glutinous mixture and having a finely divided, fibrous material incorporated therewit 4:. An expansion joint of the class de scribed, comprising a ductile bituminous material combined with a subordinate proportion of glutinous mixture and having vegetable fibres of varying dimensions, andin an unpenetrated state, incorporated therewith.

5. Preformed construction material, consisting of a mixture of about five (5) per cent gluten, about eighty-five per cent ductile bituminous material and about ten (10) per cent finely divided filling material.

6. The method of preparing a premoulded expansion joint by mixing a gluten, bituminous filling material into-a homogeneous mass and finely divided material, reducing same to flat sheets and cutting said sheets into strips of desired size. n

7. The method of preparing constructional material by adding gluten to bituminous material for controlling the penetrating powers of the bituminous material, then incorporat-v ing fibrous material after said penetration has been controlled, thus minimizing penetration of the fibrous material by the bit-uminous material. 1

8. Preformed constructional material consisting of a mixture having a predominating proportion of ductile, bituminous material and a subordinate proportion of glutinative agent.

9. The method of preparing constructional material which consists in mixing "ordinary flour gluten with water, adding glycerine and heating to a temperature between 200 and 300 F., and adding bituminous material thereto.

10. The method of forming constructional material which consists in mixing flour gluten with water, adding glycerine and heating the same to between 200 and 300 F., and then adding a large proportion of bituminous material thereto.

11. The method of preparing constructional material which consists in mixing flour gluten with water to reduce it to subs antially a colloid form, adding sufficicnt glycerine to prevent the watered gluten from hardening, heating the mixture to a tempcra- 

